<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>超链接伪类</title>
    <style>
        /* a:link{
            color: red;
        }
        a:visited{
            color: green;
        }
        a:hover{
            color: blue;
        }
        a:active{
            color: purple;
        } */
        /* 工作中 一个hover */

        a{
            color: red;
        }
        a:hover{
            color: green;
        }
    </style>
</head>
<body>
    <a href="#"> a标签,测试伪类</a>

</body>
</html>